Machine for making paper boxes.



No. 655,434. Patented-Aug. 7, I900.

W. S. DAVIS. 1

MACHINE FOR MAKING PAPER BI'IXES.

(Application filed Nov. 25, 1898.)

4 Sheets-Sheet I.

(No Model.)

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Patented Aug. 7,, I900.

w. s. DAVIS.-

MACHINE FOR MAKING PAPER BOXES.

(Application filed Nov. 2-5, 1898.)

4 Sheets-Sheet 2.

(No Model.)

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No. 655,434. Patented Aug. 7, 1900.

w. s. DAVIS.

MACHINE FOR MAKING PAPER BOXES.

(Application filed Nov. 25, 1898.)

4 Sheets-Sheet 3 (No Model.)

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MACHINE FOR MAKING PAPER BOXES.

(Application filed Nov. 25, 1898.)

(No Model.) 4 Sheets-Sheet 4.

WITNESSES INVENTOR m: Nonms wzrzns co.. morqumu, WASNINGTON n. c.

TATES I WVALTER S. DAVIS, OF CONTOOCOOK, NEW HAMPSHIRE, ASSIGNOR TO THE KINGSBURY & DAVIS MACHINE COMPANY, OF BOSTON, MASSACHUSETTS;

MACHINE FOR MAKING PAPER BOXES.

SPECIFICATION forming part of Letters Patent No. 655,434, dated August '7, 1900. Application filed November 25, 1898. Serial No. 697,346. (No model.)

To all whom, it may concern:

Be it known that I, WALTER S. DAVIS, a citizen of the United States, residing at Contoocook, Merrimac county, State of New Hampshire, have invented certain new and useful Improvements in Paper-Box. Machinery, of which the following is a full, clear, and exact description.

This invention relates to paper-box machinery of the class used for automatically producing paper boxes from blanks previously cut to proper shape and scored for foldin g, the said machine effecting the assembling and sticking together of said blanks and the final delivery of the completed box.

Briefly described, the mechanisms and op erations of such machinery act as follows in the production of boxes: A body-blank (constituting the bottom and sides of the box and flanges to which the end blanks are secured) is fed in the flat from a pile at one end of the machine to a point beneath a vertically-reciprocating plunger or form of the exact size of the inside of the box to be produced. Said plunger first descends upon the body-blank and forces it through an opening in order to effect the bending or breaking up of the side and flange portions of said blank on its scorelines. Continuing in its downward movement the plunger carries said bodyblank past the periphery of paste-rolls, which latter deposit a supply of paste upon the outer faces of the said flanges. At a point somewhat below the paste -rolls the plunger is checked in its downward travel and so-called end blanks (which, as their name implies, constitute the ends of the box and have been previously automatically fed into position from piles of the same) are carried forward by certain pressure-heads, and under great pressure one of said end blanks is pressed against the pasted flanges at each end of the body-blank. The blanks for each end of the box are applied simultaneously, and after this operation said pressure-heads recede and the plunger returns to its elevated position in readiness to repeat the operations just described. Meanwhile the completed box has dropped from the plunger upon a constantlytraveling endless belt or apron. that Carries the box away from the machine.

My newly-invented improvements relate to the mechanism for feeding the end blanks into position to be pressed upon the pasted flanges of the body-blanks, as just described, 5 5

ments is to provide simple and positive mech- 6o anism for feeding the end blanks as above and to simplify and strengthen said pressurehead mechanism, said last-named improvements effecting also the delivery mechanism of the machine."

I have but briefly described the operations of a box-machine of the class to which my invention relates, as it is assumed that such operations are well knownto those conversant with this class of machinery, and a more detailed description is therefore deemed unnecessary, excepting as such operations and mechanisms relate to my newly-invented improvements.

To assist in explaining my invention, 1 have provided the accompanying four sheets of drawings, illustrating my said improvements and those portions of the machine to which they relate.

Figure 1 is a side elevation of a box-ma- 8o chine fitted up with my newly-invented improvements. Fig. 2 is a plan view showing detached certain elements of said machine. Fig. 3 is a plan view of the mechanism in the lower portion of the machine-that is to say, 8

below line 1 1 of Fig. 1.' Fig. 4 is an elevation of a portion of that side of the machine opposite to that shown in Fig. 1. Fig. 5 is a vertical sectional view of a portion of my newly-invented mechanism, said view being 0 taken on the line at 4 of Fig, 4. Fig. 6 is a plan View of certain portions of my said newly-invented mechanism, the same being located principally near the upper portion of the machine. an elevation and an edge view of a portion of the blank-feeding mechanism. Figs. 9 and 10 illustrate in side and front elevations, respectively, the mechanism for applying the end blanks to the body-blank and for effecting the delivery of the completed box. Fig. 11 is a perspective view of the body-blank as Figs. 7 and 8 are respectively 5 the same appears before the application of its end blanks, and Fig. 12 is a perspective View of the completed box.

Referring to the drawings, the numbers 10 and 11 denote the side frames of the box-machine, said frames having bearings in their lower portions for the support of shafts 12, 13, and 14, that extend parallel to each other and at right angles to the said side frames 10 and 11.

Shafts 12 and 14 are located approximately equidistant from and at each side of the vertical center of the machine as viewed from its sides, the former constituting the initial or driving shaft of said machine. Shaft 13, as here shown, is located at the vertical center of the machine. Shaft 12 is provided with a driving-pulley 15. Shaft 12 also bears a pinion-gear 12, that meshes with and drives a large gear 13 on shaft 13. Shaft 13 drives in turn the shaft 14 by means of a pair of gears 13 14, located, respectively, on said shafts 13 and 14. It will now be seen that when shaft 12 is set in revolution by its driving-pulley 15 like motion will be imparted through gears 12, 13, 13, and 14 to the shafts 13 and 14, and said shafts 12, 13, and 14 then serve to drive the various mechanisms of the machine.

Mounted upon shaft 14, adjacent to the inner faces of frames 10 and 11, are cams 16, that are adapted to revolve with said shaft and drive through proper connections the plunger or box-form with a vertically-reciprocating motion, as above mentioned. Said plunger or box-form is denoted by referencenumber 17 and is supported by means of the plunger-rod 17', secured to a cross-bar 18, whose opposite ends are supported by rods 19, that are fitted to slide vertically in suitable bearings. Rods 19 extend downward just inside the frames 10 and 11, and their lower ends are connected by means of a link 19 to the free end of levers 20, pivotally secured on studs 20 20, located on the inner faces of frames 10 and 11. The levers 20 are provided midway their length with rolls 21, adapted to engage and ride upon the cams 16,

with which they are held in continuous contact by means of springs 22, connecting the free ends of said levers with some fixed part of the machine. It will now be seen that when said cams 16 are set in revolution they will (through their engagement with rolls 21) efiect the rocking of levers 20, which latter in turn cause the rods 19 and connected parts, including the plunger, to travel with a vertically-reciprocating motion.

The pressure-heads provided for applying the end blanks to the previously pasted flanges of the body-blank, as above described, are two in number and are adapted to apply both end blanks simultaneously. Said heads are denoted by reference-number 23 and are adapted to slide upon a frame or shelf 10, supported by frames 10 and 11. Referring now to the mechanism for operating the said heads 23, located at the front and delivery ends of the machine are cross-rods 24, that are secured to the frames 10 and 11 and serve as the fulcra of levers 25, whose upper ends are connected by rods 25 to their respective pressure-heads 23 and whose lower ends are pivoted to the ends of rods 26, that are operated by eccentrics 27',carried by the shaft 13,in such manner that the revolution of said shaft serves to swing the lower ends of said rods in ward and outward simultaneously. The pivjotal connection between the'rods 26 and levers 25 includes powerful springs 26, which yield slightly if sufficient resistance is offered by the levers 25 when the eccentrics seek to revolve. The springs 26 relieve the otherwise rigid (inflexible) action of the pressureheads and prevent breakage of the levers 25. It will now be readily understood that,through the eccentrics 27 and the described connections, levers 25 are rocked, and the latter, through rods 23, impart a horizontally-reciprocating motion of the pressure-heads 23 toward and away from the plunger 17.

The endless apron, already referred to, for delivering the completed boxes is denoted by reference-number 28, and said apron is supported on pulleys 29 29, located, respectively, on shafts 3O 30, parallel to shafts 12, 13, and 14, and suitably supported in frames 10 and 11. Shaft 30 carries a pulley 31, that is in line with a pulley 33 on shaft 14 and is connected therewith by a belt 32. By the revolution of said shaft 14 and the consequent movement of pulleys 33 31 and belt 32 the shaft 30 and pulley 29 thereon are revolved and the driving of apron 28 is eifected.

The body-blank of the box is denoted by the letter a and, as above mentioned, provides the bottom and sides of the box and flanges a, to which the end blanks (denoted by letter 1;) are secured. Referring now to the mechanism for feeding the said end blanks, (see particularly Fig. 6,) it will be seen that the frame or shelf 10', which supports the pressure-heads 23,serves also to support m uch of the end-blank-feeding mechanism. Of the latter the reference-number 34 denotes two plates adjustably mounted on frame 10', the confronting ends of said plates having upright portions 35, extending at right angles to the length of said plates and parallel to the shafts 12, 13, and 14 above mentioned. Uprights 35 are formed with extensions 35, and said uprights and extensions are planed to provide ways 35 for the reception of a bar,

or carriage 36, adapted to travel with a horizontal reciprocating motion in said Ways to effect the feeding of the end blanks b, which latter are piled on the plates 34, as seen in Fig. 6, and are adapted to be forced forward against the uprights 35 by a follower 37 whenever a blank is removed by the carriage 36. The end blanks b are supported by the side guides 38 and 39, the former of which is fixed.

upon the inner edge of the plate 34, while the latter is adjustably mounted upon said lastnamed plate.

To make the feeding of the end blanks positive and to enable the attendant to adjust the end-blank pickers very finely, asheet steel blade is adjustably secured to the side of each carriage 36, as shown in Figs. 7, 8, and 9. Blade 40 is shown in the drawings as secured to carriage 36 by means of a setscrew 41, passing through a slot 40 in said blade and secured in the carriage 36, thus (when loosened) allowing said blade to be adjusted upon the carriage and serving (when tightened) to retain the blade in position thereon. Blade 40 is provided with the shoulder 40, which when carriage 36 is in its outward position is adapted to engage the blank nearest the upright 35. Upon the forward movement of said carriage the blank is forced before shoulder 40 and is carried to and deposited on the ledge 23 of the pressure-heads 23, where it is left as the carriage recedes. Upon the next forward movement of the pressure-heads the end blanks are applied to the pasted flanges a of the bodyblank a to form the box ends, as shown in dotted lines in Fig. 9. To cause carriages 36 to travel with a horizontally-reciprocating movement, the following-described mechanism is provided: Each of said carriages or bars has cut in its lower edge rack-teeth 36, and engaging said teeth through a slot 35 in upright extensions 35 are gears denoted, respectively, by reference-numbers 43 and 44, Figs. 4 and 7. Gears 43 and 44 are mounted upon a shaft 45 common to both,

which shaft is supported near each end by bearings 46, fixedly secured to frame 10. Shaft 45 passes through a casing 47, secured to the outer side of the machine-frame 11 and bears a gear 48, Fig. 5, meshing with and driven by a rack 49, that is adapted to travel with a vertically-reciprocating motion within said casing 47. To effect the said travel of rack 49, I have mounted on the end of shaft 13, opposite gear 13, a disk or crank-arm 50, that is connected by a pitman 51 with a pin 49', projecting through a slot 47 in casing 47. Disk 50, revolving with shaft 13, causes the rack 49 (through the pitman 51) to travel with a vertically-reciprocating motion, said rack thereby causing the gear 48 to revolve alternately in opposite directions, and said gear in turn imparts corresponding revoluble motion to the gears on shaft 45. Gears43 and 44, meshing with the rack-teeth 36' of carriages 3o, drive the latter with a horizontally-reciprocating motion and thereby effect the feeding of said end blanks.

Heretofore, so far as I am familiar with this class of machinery, the completed box has dropped directly upon the traveling delivery-apron 28. When thus constructed, it is essential that said apron 28 shall be in the vertical plane of the pressure-heads, so that the finished boxes may drop upon said apron. Such construction requires the provision of pressure-levers 25 of open (yoke) form, so that the apron 28 may travel therethrough and the delivery of the box he unobstructed by said levers. Such form of lever is objec tionable both because of the liability to break and because of the cost of producing the same, and I have therefor so constructed the delivery mechanism of my present machine that an ordinary lever 25 may be used. In my said newly-constructed mechanism I have placed the delivery-apron 28 at one side the levers 25 and the completed boxes instead of dropping directly thereon fall upon a frame 52, depending from one of a pair of bars 53, supported by rods 24. Said frame 52 is upon the same or a slightly-higher level than the upper portion of apron 28, so that the box may be pushed thereonto from said frame 52 and then be carried from the machine by the said apron.

Hinged to the bar 53 is a plate 54, which latter is connected byalink 55 with the longer arm of a lever 56, pivoted at 57 to frame 10. The shorter arm of lever 56 bears a roll 57, engaging a face-cam 13 formed on the side of gear 13, said roll being held in contact with said gear by means of a spring 56 When gear 13 is rotated by its shaft 13, the cam 13 effects the rocking of the lever 56, and the latter, through link 55, causes plate 54 to swing from its hinged support to push the box from frame 52 onto apron 28, as will be best understood by reference to Fig. 10 of the drawings.

Having thus described my invention, I claim 1. In a box-machine, a vertically-movable plunger, mechanism for reciprocating it, plates placed upon opposite sides of the plunger and adapted to receive the end blanks, uprights 35 against which the inner end blanks bear, extensions 35 connected with the uprights, and bars or carriages provided with racks, combined with the shafts 45 provided with the wheels 43 for engaging with the said racks, means for causing the shaft 45 to turn in first one direction and then the other, and the blades 40, provided with bends or shoulders for feeding the end blanks, and which are connected to the carriages, substantially as shown.

2. In a box-machine, the blades provided with bends, and means for reciprocating the blades so as to feed the end blanks, combined with a vertioally-reciprocating plunger, the two pressure heads which apply the end blanks to the ends of the box carried by the plunger, and means for reciprocating the pressure-heads so as to apply the end blanks to the opposite ends of the box-blank carried by the plunger simultaneously when the plunger is in its lowest position, substantially as described.

3. In a box-machine the combination with a blank-support, of blank-feeding mechanism comprisinga feeding-slide provided with a rack, a shaft geared to said rack, asecond rack geared to the shaft, and a crank and pitman operatively connected to the last-named rack substantially as specified.

4. In a box-machine, the plates 34, upon which the end blanks are placed, the followers 37 by which the end blanks are fed forward, the uprights 35 against which the end blanks are forced by said followers, and end- Wise-reciprocating blades 40, provided with bends orshoulders for feeding the end blanks, and mechanism for reciprocating them, com: bined with a vertically-reciprocating plunger, the two reciprocating pressure-heads, and mechanism for operating them, whereby Whenthe plunger reaches its lowest position carrying a box-blank the end blanks are simultaneously applied thereto, substantially as 26 specified.

5. In a box-machine, the operating-shaft 13, a wheel placed thereon and provided with a cam-disk 13, a pivoted lever operated by said disk, a connecting-rod connected to the upper end of the lever, and the plate 54 operated by said lever, combined with the frame 52, the bar 53 to which the plate 54 is pivoted, and the endless belt 28 upon which-the box is forced after it is completed, substantially 30 as specified.

Signed at Oontoocook, New Hampshire, this 27th day of October, 1898.

WALTER S. DAVIS.

l/Vit-nesses:

JOHN A. FULLER, WM. A. PATTERSON. 

